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  1. About Chlamydia | Chlamydia | CDC

    Jan 31, 2025 · This page answers basic questions about chlamydia, including how to prevent and treat it.

  2. Chlamydia - World Health Organization (WHO)

    Nov 21, 2024 · Overview Chlamydia is a common sexually transmitted infection that can occur in both men and women. It is caused by a bacterium called Chlamydia trachomatis. It is easily …

  3. Chlamydia: Causes, Symptoms, Treatment & Prevention

    Overview What is chlamydia? Chlamydia is a common sexually transmitted infection (STI) caused by bacteria. Chlamydia infections are treatable and curable. However, its symptoms are often …

  4. Chlamydia trachomatis - Symptoms and causes - Mayo Clinic

    Overview Chlamydia (kluh-MID-e-uh) is a common sexually transmitted disease. Sexually transmitted diseases are infections spread mainly by contact with genitals or bodily fluids. Also …

  5. Chlamydia - Wikipedia

    Chlamydia, or more specifically a chlamydia infection, is a sexually transmitted infection caused by the bacterium Chlamydia trachomatis. [3] Most people who are infected have no symptoms. …

  6. Chlamydia: Overview and More - Verywell Health

    Aug 25, 2025 · Caused by the bacterium Chlamydia trachomatis, it is the most frequently reported bacterial STI in the United States, with more than 1.6 million cases each year. 1 Though most …

  7. Chlamydia: Symptoms (Men & Women), Diagnosis, Treatment - WebMD

    Jun 6, 2024 · Chlamydia - A sexually transmitted disease that affects men & women. Learn more about the symptoms, diagnosis & treatment options.

  8. Chlamydia - NHS

    Find out about chlamydia, a sexually transmitted infection (STI), including symptoms, how it's treated, and how to prevent it.

  9. Chlamydia Infections - MedlinePlus

    May 31, 2024 · Chlamydia is a common sexually transmitted infection (STI). It is caused by bacteria called Chlamydia trachomatis. Anyone can get chlamydia. It often doesn't cause …

  10. Patient education: Chlamydia (Beyond the Basics) - UpToDate

    Oct 3, 2025 · Chlamydia (pronounced klah-MID-dee-uh) is a sexually transmitted infection that can affect both men and women. There are approximately four million cases of chlamydia in …